[PATCH v3 2/5] powerpc/smp: Rename cpu_l1_cache_map as thread_group_l1_cache_map

From: Gautham R. Shenoy
Date: Thu Dec 10 2020 - 05:40:53 EST


From: "Gautham R. Shenoy" <ego@xxxxxxxxxxxxxxxxxx>

On platforms which have the "ibm,thread-groups" property, the per-cpu
variable cpu_l1_cache_map keeps a track of which group of threads
within the same core share the L1 cache, Instruction and Data flow.

This patch renames the variable to "thread_group_l1_cache_map" to make
it consistent with a subsequent patch which will introduce
thread_group_l2_cache_map.

This patch introduces no functional change.

Signed-off-by: Gautham R. Shenoy <ego@xxxxxxxxxxxxxxxxxx>
---
arch/powerpc/kernel/smp.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 88d88ad..f3290d5 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -116,10 +116,10 @@ struct thread_groups_list {

static struct thread_groups_list tgl[NR_CPUS] __initdata;
/*
- * On big-cores system, cpu_l1_cache_map for each CPU corresponds to
+ * On big-cores system, thread_group_l1_cache_map for each CPU corresponds to
* the set its siblings that share the L1-cache.
*/
-DEFINE_PER_CPU(cpumask_var_t, cpu_l1_cache_map);
+DEFINE_PER_CPU(cpumask_var_t, thread_group_l1_cache_map);

/* SMP operations for this machine */
struct smp_ops_t *smp_ops;
@@ -866,7 +866,7 @@ static struct thread_groups *__init get_thread_groups(int cpu,
return tg;
}

-static int init_cpu_l1_cache_map(int cpu)
+static int init_thread_group_l1_cache_map(int cpu)

{
int first_thread = cpu_first_thread_sibling(cpu);
@@ -885,7 +885,7 @@ static int init_cpu_l1_cache_map(int cpu)
return -ENODATA;
}

- zalloc_cpumask_var_node(&per_cpu(cpu_l1_cache_map, cpu),
+ zalloc_cpumask_var_node(&per_cpu(thread_group_l1_cache_map, cpu),
GFP_KERNEL, cpu_to_node(cpu));

for (i = first_thread; i < first_thread + threads_per_core; i++) {
@@ -897,7 +897,7 @@ static int init_cpu_l1_cache_map(int cpu)
}

if (i_group_start == cpu_group_start)
- cpumask_set_cpu(i, per_cpu(cpu_l1_cache_map, cpu));
+ cpumask_set_cpu(i, per_cpu(thread_group_l1_cache_map, cpu));
}

return 0;
@@ -976,7 +976,7 @@ static int init_big_cores(void)
int cpu;

for_each_possible_cpu(cpu) {
- int err = init_cpu_l1_cache_map(cpu);
+ int err = init_thread_group_l1_cache_map(cpu);

if (err)
return err;
@@ -1372,7 +1372,7 @@ static inline void add_cpu_to_smallcore_masks(int cpu)

cpumask_set_cpu(cpu, cpu_smallcore_mask(cpu));

- for_each_cpu(i, per_cpu(cpu_l1_cache_map, cpu)) {
+ for_each_cpu(i, per_cpu(thread_group_l1_cache_map, cpu)) {
if (cpu_online(i))
set_cpus_related(i, cpu, cpu_smallcore_mask);
}
--
1.9.4